Abstract
Multisite Electroanatomic Mapping. Ablation of intra‐atrial reentrant tachycardia following Mustard or Senning procedures has low success rates. The Biosense Carto system was used to map intra‐atrial reentry in a 22‐year‐old woman who had undergone a Mustard procedure. A line of block was created connecting a Mustard baffle suture line to the tricuspid valve annulus, which terminated the arrhythmia and prevented its reinitiation. Multisite electoanatomic mapping was invaluable in defining atrial anatomy and the intra‐atrial reentrant pathway, and in creating a contiguous line of block. This mapping may improve ablation success rates in patients following the Mustard or Senning repair.
